hi ,
me and my team had already developed this short of project , if you want can show you the demo.
I have an admin panel(backend), website and android,iPhone apps ready , not for cab service but for some other service , in 15 days i can tweak the same to cab service.
Please let me know if you are interested to see my work, i can assure you best quality in best cost.
Write back for more details.
Cheers